The low pressure area over Bay of Bengal may set a record of bringing rare summer rain during early March. The Meteorological Department has predicted widespread rain over the State on Friday and Saturday and it may intensify into very heavy rain spell in some districts.
March is usually a dry period in Chennai with an average monthly rainfall of hardly 3.5 mm. However, meteorologists expect the low pressure area over southeast Bay of Bengal and adjoining Equatorial Indian Ocean to become well-marked and move towards the Sri Lankan coast.
As the weather system moves west-northwestwards, rainfall intensity may increase from scattered to widespread from Thursday. While light to moderate rain may occur in many places over the State, Puducherry and Karaikal on Friday and Saturday, some districts may experience heavy to very heavy rain in one or two places on both the days.